|
请教高手
$ k9 E* l6 Q: F, L. ]# g5 ]0 Y; B9 ]5 ]# {
IEC/EN61010-1:2010 对跨接初级与次级Y电容有什么要求。9 J4 o2 W) E$ [/ q/ d5 Q. Y' y/ E
现有:
- |' d" _) m0 O: mCY1电容器跨接在初次级上,满足加强绝缘距离要求。) O: ?4 G K+ A- ~+ j5 e
# i7 Y1 b6 E5 O5 x认证公司要求:9 M( F. V& j6 K K+ Y" c7 k) s
1. CY1电容耐压值应该更换为500V
, D9 P+ {) K5 f0 v5 q5 x2. 或者采用两个CY2串联
' d: G5 x' B3 u) ?& L! h/ p3 G* R
& l& z, q6 j+ k3 T, X目的:因为EN61010-1标准要求CY1必须要有2倍工作电压的耐压值4 U" Z Y2 O/ I6 L
2 j1 p% R- ~8 S! }
1. 我想知道他们所说的耐压值什么意思?
0 H% p' q! E: g6 M& M
; v. ~" v" l$ R) }+ d& k0 S3 N/ d2. IEC/EN61010-1:2010 是说的这个意思?
6 ^5 B z' u5 V* N1 a4 X: p" ~( Y( p- e
下文为标准:* U8 ]7 G/ }3 V8 n2 D! k2 M
6.5.4 PROTECTIVE IMPEDANCE
2 h4 O, K/ h. n" q0 o+ uA PROTECTIVE IMPEDANCE shall limit the current or voltage to the levels of 6.3.1 in NORMAL
0 @; _% g1 \: @4 y+ f" pCONDITION and 6.3.2 in SINGLE FAULT CONDITION.9 f' g% V0 Y2 ~9 V3 n& q: E& B
* ^4 M4 u8 i2 K! s) N# [. ]' h: b
Insulation between the terminations of the PROTECTIVE IMPEDANCE shall meet the requirements; W& z! s r) Y* r4 p I
of 6.7 for DOUBLE INSULATION or REINFORCED INSULATION." w: E! }4 Z) Q$ y
1 t0 T8 U2 K# U' h6 i! [
A PROTECTIVE IMPEDANCE shall be one or more of the following: _) X' v3 D( ~5 I9 p n
5 O* a- `5 s9 x, ra) an appropriate single component which shall be constructed, selected and tested so that safety and reliability for protection against electric shock is assured. In particular, the component shall be:+ J+ t& c+ C; W% A' N% J
8 z$ a! h3 D! b9 @; G
1) RATED for twice the maximum WORKING VOLTAGE;
9 ~# C+ O% a- Y2 L6 m1 y* L5 l( C
2) if a resistor, RATED for twice the power dissipation for the maximum WORKING VOLTAGE." D0 ~8 N3 e% a+ ^ \9 T2 y5 w
9 f7 F% z J7 F' F
b) a combination of components.
6 s7 H1 M* G6 r0 g' p: R0 m% M1 BA PROTECTIVE IMPEDANCE shall not be a single electronic device that employs electron* G& c5 A$ y$ Z0 O/ v2 q
conduction in a vacuum, gas or semiconductor9 C; U; C9 p+ q6 a+ S
Conformity is checked by inspection, by measuring the current or voltage to confirm that they3 ~/ O9 `% I; O8 {# W& D8 L
do not exceed the applicable levels of 6.3 and by measuring CLEARANCES and CREEPAGE' m$ e$ X _7 L1 D# o# p
DISTANCES as specified in 6.7. Conformity of a single component is checked by inspection of3 W, @$ T, z/ X u' B! F
its RATINGS. |
|